Figure 1.

The COVID-19 pandemic spread around the world, forcing people, particularly older adults, to physically restricted conditions, including home isolation and hospitalization. These conditions resulted in further reductions in daily physical activity, leading to deterioration of muscle health (loss of muscle mass and function) in older adults, which is closely associated with worse consequences, including fatigue in daily life, slow recovery rate from diseases, increased likelihood of chronic disease, and thus inability of their independent life. The figure was created by BioRender.